Medical image metadata processing

ABSTRACT

Enhanced techniques for the extraction and use of metadata from medical images are disclosed herein. Based on the information in the metadata, specific processing may be performed within an image order management system, radiology information system (RIS), or like system. A radiology read order may be created, pre-populated, and transmitted via a processing system (e.g., a teleradiology image order management system) based on the metadata within the radiology image. For example, this metadata may exist within the header of a DICOM-formatted image data file or a DICOM communication protocol transmission. The processing system may then provide the prepopulated read order back to the source of the medical images for verification and submission. Other processing actions may also occur based on information extracted from the image metadata, such as custom workflows and handling based on an originating facility, or transferring the images to a particular radiologist or location.

CROSS REFERENCE TO RELATED CASES

This application is a continuation-in-part of prior U.S. patent application Ser. No. 12/783,073 filed May 19, 2010 and entitled “Multiple Resource Planning System”, which is a continuation of prior U.S. patent application Ser. No. 11/288,645 filed Nov. 28, 2005 and entitled “Multiple Resource Planning System”, which claims the benefit of U.S. Provisional Patent Application Nos. 60/656,215, filed Feb. 25, 2005 by Backhaus and entitled “Automated Credentialing and Licensing System”; 60/682,052, filed May 17, 2005, by Backhaus et al. and entitled “Integrated Caching Environment with Order Form Pre-population”; 60/694,880, filed Jun. 29, 2005, by Backhaus et al., and entitled “Medical Data Management Method and System”; 60/699,119, filed Jul. 14, 2005, by Backhaus et al., and entitled “Medical Data Transfer System and Method”; 60/740,454, filed Nov. 28, 2005 by Backhaus et al., and entitled “Medical Data Transfer System and Method”; 60/740,589, filed Nov. 28, 2005 by Casey and entitled “Remote Scanning System and Method”; and 60/740,527, filed Nov. 28, 2005 by Casey and entitled “Patient Information Translation Method and System”; the entirety of all of the preceding applications are incorporated herein by reference.

FIELD OF THE INVENTION

The present invention generally relates to medical image data processing and the evaluation of radiological images. The present invention more specifically relates to the extraction and use of metadata from radiological images and data transmissions, such as header metadata stored within images compliant with the DICOM (Digital Imaging and Communications in Medicine) standard.

BACKGROUND OF THE INVENTION

Medical images generated by an imaging modality, such as X-rays, CAT (Computerized Axial Tomography) scans, and MRI (Magnetic Resonance Imaging) scans, are commonly digitized to facilitate reading by doctors at remote locations. In use, hospitals and other healthcare providers commonly use systems to capture and digitize the medical images. The medical images are typically transmitted from the modality to a remote image server such as a Picture Archiving and Communications System (PACS). This transmission may occur over a network, such as an intranet or the Internet.

Additionally, the hospital may also transmit orders corresponding to the images to an order server, such as a Radiologist Information System (RIS). Orders are used to request a radiologist to interpret, or read, the images and return a diagnostic report. Orders may also contain additional information related to the image or the patient, such as a patient identifier, the procedure type associated with the image, patient demographic information, and a hospital identifier. Thus, orders may be submitted by hospitals and healthcare providers to identify the patient and instruct the radiologist to provide information for a specific medical condition.

Existing processing systems used in radiology practices generally route images and orders to radiologists in a fixed manner. For example, all of the images and orders may be transmitted from the scanning area of a hospital to a set of doctors that work in the radiology department of the same hospital. After receipt of the images and orders, the radiologist may analyze the image and return a diagnostic report. The diagnostic report may be transmitted through the network to the order server (the RIS), which in turn may forward the report to the hospital or other medical facility that originally transmitted the order and images corresponding to the report.

Although many types of PACS and RIS systems are used by healthcare providers, most PACS and RIS systems are not configured to communicate with each other and correlate orders with the actual images. Therefore, full integration of an order into a radiology workflow is not achieved. As an example, Synapse from FUJIFILM Medical Systems of Stamford, Conn. allows doctors to subscribe to a folder on a PACS. When new images arrive in that folder, a doctor receives notification that the images have arrived. The new images may be cached or stored on the doctor's remote system for viewing. However, the radiology order must be manually created, validated, and submitted before the doctor can proceed with his or her analysis of these images.

In connection with the generation and use of radiological images, information for the patient and the radiological procedure may be entered or separately stored in a variety of locations, potentially leading to redundant or inconsistent data. For example, the information may be provided at the imaging modality before the radiology technician conducts the imaging of the patient; the information may be provided within the radiological images (such as in the header of a DICOM-standard image); the information may be provided within the PACS storing the images; the information may be provided in a RIS as a radiology order is manually created; and the information may be provided from the hospital or healthcare provider's medical record system. Enhanced techniques are needed to improve the workflow speed and accuracy of orders and information involved with remote radiological readings.

BRIEF SUMMARY OF THE INVENTION

One aspect of the present invention relates processing radiology orders and images using medical image data, such as metadata stored directly within a digital radiology image file. In one specific embodiment, a series of radiology image data files are received at an image order processing server from a medical facility via a network connection. Each of the series of radiology image data files is generated by an imaging modality at the medical facility, or forwarded from a facility's PACS implementation, and contains metadata to accompany radiology image data.

At least one of the series of radiology image data files is processed using the image order processing server, resulting in the extraction of the metadata stored in the data files. In a further embodiment, metadata is retrieved from the first image data file received at the image order processing server. The data provided by one or more data fields within the extracted metadata is used to create and populate a radiology order. In still a further embodiment, metadata is provided by one or more data fields defined in the data transmission of the image data files, such as a data transmission of medical image data files compliant with the DICOM communication protocol.

The radiology order is electronically transmitted to the medical facility for verification, such as by a radiology technician or ordering physician. Responsive to verification (or changes followed by verification) of the radiology order, the radiology order is received from the medical facility at the image order processing server and processed further as required. Finally, the radiology order and the series of radiology image data files are transmitted from the image order processing server to a radiologist.

In some embodiments, the radiologist is selected from a plurality of radiologists by the image order processing server based on data fields within the metadata and information provided within the validated order. For example, data values such as patient identifier, a medical facility identifier, sex of the patient, age of the patient, a type of modality used to produce the series of medical images, a type of radiological procedure, an indication of whether the study is a preliminary or final read, a type of medical condition, and a type of scan for which the series of medical images relates to might be used to select the radiologist. Further, based on the medical facility identifier, a radiologist who is licensed and credentialed for performing reads for the medical facility might be selected from a pool of potential radiologists.

The radiology image data files may be stored in a DICOM format, in another industry-standard format, or in a proprietary format that is unique to the imaging modality or processing platform generating the medical images. The imaging modality may be a modality supported by the DICOM standard. In a further embodiment, the radiology image data files may be converted to another format or modified by the image order processing system prior to electronic transmission to the radiologist.

Another aspect of the present invention relates to processing radiology orders and images using medical image data, including cases where a radiology order is transmitted prior to transmission of the radiology image data. In one specific embodiment, radiology order data relating to a radiological examination of a patient is received from a medical facility at an image order processing server (such as a teleradiology processing server). The radiology image data is produced from the radiological examination and then received by the image order processing server.

The radiological image data is processed using the radiology processing server to extract metadata transmitted or stored with the image. Based on the image metadata, the radiology order is correlated to specific radiology image data. Further based on this metadata and medical specifications within the radiology order data, a radiologist may be selected from a plurality of radiologists. Selecting this radiologist may include selecting a radiologist based on data field values (such as a medical facility identifier). The radiology image data and the radiology order data may then be transferred to the selected radiologist consistent with the specifications of the radiology order.

Other embodiments of the present invention may provide for a system comprising a network and a radiology processing server configured for processing radiology orders and images, implementing the techniques described herein. Additionally, other embodiments of the present invention may provide for a computer program product for processing radiology orders and images, with the computer program product comprising a computer readable storage medium having computer readable program code embodied therewith to implement the techniques described herein.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 provides an illustration of a radiology system used in conjunction with an embodiment of the present invention;

FIG. 2 provides a block diagram of an image order (IO) management system for receiving and processing orders and images used in conjunction with an embodiment of the present invention;

FIG. 3 provides a block diagram of a system for assigning medical requests to doctor systems used in conjunction with an embodiment of the present invention; and

FIG. 4 provides a flowchart of an example operation for processing and creating an order from a medical image in conjunction with an embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

One aspect of the present invention relates to the use and processing of data obtained from medical images, and in one specific embodiment, the use and processing of medical and technical metadata that is provided within DICOM-format radiological image data files and data transmissions. In an illustrative embodiment, as medical images are received by an image processing system, metadata stored within the header of the DICOM-format medical image is extracted. This extracted data may be used to facilitate an improved operation of radiology processes, such as for use in the automatic creation and verification of a radiology read order. Further, this extracted data may be used to facilitate an enhanced workflow of the radiology study that may occur before or after the validation and submission of the order.

In a typical healthcare setting, an order must be validated and submitted before a radiologist can conduct his or her examination of a series of radiology images. The examination or “read” of this series of radiology images is generally referred to herein as a radiology study. The order to conduct the radiology study is typically entered and validated by the radiology technician or doctor at the location of the patient, e.g., at an imaging modality or at an emergency room. The order contains the necessary patient and medical information relating to the requested radiology study, such as providing instructions for the radiologist to identify a specific medical condition or to examine a certain area. After verification and submission, the order is then transmitted to a radiology department or directly to a radiologist along with the images for reading.

As is evident from the following description of an example radiology system configuration, the information that must be entered into the radiology read order may be duplicative of information already entered and stored in the medical image metadata or in other electronic medical record sources. In one embodiment of the present invention, the radiology read order may be created and pre-populated based on the metadata processed from one or more radiology images to be read in the radiology study.

Referring to FIG. 1, a configuration of an example radiology system 100 is illustrated. The system 100 can be used for capturing medical image data in one location and for reviewing medical images associated with the data in another location. The system 100 may include many geographically separated imaging devices and many image review terminals. Therefore, system 100 might be configured to operate as a remote teleradiology system connected to a plurality of healthcare locations, or as a localized radiology system used in a single hospital, healthcare provider network, or private radiology practice.

For purposes of illustration, the radiology system 100 illustrated in FIG. 1 includes an imaging system 104, an image order (IO) management system 102, and an image review system 106. The imaging system 104, for example, may include an imaging device 120, such as a CT (computed tomography) scanner, an MRI (magnetic resonance imaging) scanner, ultrasound machine, or another imaging modality. Using an energy source such as x-rays or magnetic fields, for example, the imaging device 120 may capture image data associated with a subject 122 (e.g., a patient).

The imaging device 120 may be controlled by a radiology technician 126 through the use of a workstation terminal or other electronic control 124. Prior to the radiology technician 126 conducting the scan of a patient, information is entered into the terminal 124. In most medical devices, this information must be manually entered via an input device (such as a keyboard) operably coupled to the terminal 124. This information is then embedded with the image itself. For example, the imaging device 120 may produce radiological image data files generally consistent with the DICOM format, other industry-accepted standards, or in a proprietary format.

Consistent with the appropriate image format, the images produced by the image data source may include metadata. This image metadata may be generated by the imaging device 120 and/or by the technician input collected by the terminal 124. Further, the series of images may be obtained directly by the imaging device 120 in the facility shown in FIG. 1, or may be transferred in whole or in part from another image capturing device connected to the imaging device modality 120 or the facility's local network. The imaging data source may also be transmitted through use of a local facility imaging server (not shown), such as a DICOM server or other PACS.

As used in throughout present disclosure, metadata provided by the medical facility or imaging device 120 may refer to specific data fields and values provided in the imaging data itself (such as data fields in the header of each DICOM images), or specific data fields and values provided outside of the data image (such as metadata transmitted within a data communication compliant with the DICOM protocol). Those skilled in the art would recognize that numerous types and formats of metadata used in connection with medical image generation and transmission may be employed in radiology system 100, and are therefore within the scope of the present invention.

As a further example of metadata data values, the metadata within each imaging data file may include identification information such as patient identifier and an identifier of the series of images, in addition to information about the type of modality and the techniques used to obtain the images. Further, for images formatted according to the DICOM standard, data fields such as a unique image identifier, a unique study identifier, the patient's name, and the facility from which the image originates may be included.

The image data generated by the imaging device 120 may include a series of two-dimensional images. In some implementations, the image data may be used to produce a three-dimensional model that can be further manipulated and reformatted for generating two-dimensional (or three-dimensional) images. Image data captured by the imaging device 120 may be stored and processed by the IO Management System 102 or another imaging device server (e.g., one or more computers with a processor and a memory), and may be provided to other systems and computers in the system 100 through network 130 (e.g., an intranet or the Internet).

In some implementations, image data provided to the IO Management System 102 results in data being stored and processed by one or more computers. For example, the IO Management System 102 may determine that the image data is to be forwarded to a system user 142 (e.g., a radiologist) at an image review system 106. As shown, image data may be provided by the IO Management System 102 to the image review system 106 through the network 130.

The image review system 106, for example, may include an image display server 144 (e.g., one or more computers with a processor and a memory), one or more display devices 146 (e.g., monitors), and input devices 148A-B (e.g., keyboards, computer mice, joysticks, touch interfaces, voice recognition interfaces, and the like). In some implementations, image data may be processed by the image display server 144 and visually presented to the user 142 as one or more images at the display device 146. Using the input devices 148A-B, the user 142 may interact with the presented images, for example, by manipulating one or more user controls included in a graphical user interface presented at the display device 146 in association with the images. For example, the user 142 may view an image (or a series of related images), and may specify one or more image adjustments, such as zooming, panning, rotating, changing contrast, changing color, changing view angle, changing view depth, changing rendering or reconstruction technique, and the like. By viewing and interacting with presented image data and with the user interface, for example, the user 142 may produce and indicate a diagnostic finding related to the subject 122.

As further discussed below, when the IO Management System 102 receives the image, it may process the image with an image server component. This processing may include compressing or converting the image to a different format using a compressor/converter module. This image server component may also operate to extract metadata from each image file in a series of radiology scan images. For example, the extracted metadata may include header data for the image providing patient information and hospital information for the hospital that sent the image. The image server may then store all or part of the extracted information in a study record that may be correlated with appropriate orders and studies, or patient electronic medical records.

As previously suggested, within traditional radiology practices, a separate radiology read order with patient data is created independently of the patient data entered into the terminal 124. This leads to a set of data associated with the creation of the order into a RIS, and a set of data derived from the images that is ultimately compiled within a PACS. Therefore, when the radiology technician or doctor creates the radiology read order, the read order will be created with the same information already provided into the terminal 124 (or that is soon to be provided into the terminal), such as patient name. This duplicative information leads to unnecessary delay and the potential for errors.

In one embodiment of the present invention, metadata extracted from the images is used to pre-populate a radiology read order for verification by the radiology technician or doctor. This pre-population reduces the amount of manual data entry, and improves the accuracy and speed of the radiology order. Further, as suggested herein, the metadata from the images may be extracted in connection with an enhanced workflow, processing, and assignment of the radiology images and order.

FIG. 2 provides a further illustration of the components within an example IO Management System 102 and interaction between the IO Management System and image data received from radiology devices of a medical facility 104 according to one embodiment of the present invention. This IO Management System 102 may contain or be interfaced with various components of a RIS and a PACS. These and other systems within the IO Management System may be physically located or operated at disparate locations, at a single processing center, or in whole or in part by a third party service provider.

Within the IO Management System 102, an image server 202 and an order server 204 receive images and orders, respectively, from the medical facility 104. The image server 202 and the order server 204 send the images and the orders to the doctor system 106A for review by a radiologist. An access control module 206 provides secure access to the IO Management System 102 from the medical facility 104 and the doctor system 106A.

As shown in FIG. 2, the medical facility 104 may send a medical request (e.g., a request for a radiologist review of electronic medical images) comprising DICOM images 208 to the IO Management System 102. The image server 202 receives the DICOM images 208. The image server 202 may be part of a PACS, which digitally stores, transmits, and displays medical images. The image server 202 may store the image files as images 210. A DICOM processor 212 extracts DICOM data from the images and stores the DICOM data associated with the images in a database 214. The images are assigned an identifier that is stored in the database 214 and is used to access the images when needed for transmission or other purposes. When received, a compressor (not shown) may compress the images using a variety of compression algorithms to compress the images, such as JPEG, JPEGLS, JPEG2000, PNG, GIF, XBM, BMP, and TIFF.

The compressor may be implemented on the same computing device as the image server 202. In one implementation, the image compressor may be accessible by the software that executes the functions of the image server 202. For example, the image compressor may be a dynamic load library (DLL) code segment stored on the same computing device and accessed by the image server 202. Alternatively, the compressor may be implemented on a separate computing device from the image server 202. For example, the compressor may be accessible to software that executes the functionality of an Internet server, which is resident on a separate machine from the image server 202. The Internet server may access the compressor whenever it receives images from the image server 202 for transmission to the network.

Additionally, the database 214 and the images 210 may be stored at the image server 202. For example, the images and database may be stored on same machine that executes the image server software. This may simplify the operation and maintenance of the software. Alternatively, the images and database may be stored on a different machine from the image server. For example, the database may be installed on its own machine that has increased security protections and is isolated from the network in order to protect the medical data stored in the database. Similarly, the images may be installed on a separate machine that provides more storage capacity and specialized hardware that facilitates quick and efficient retrieval and storage of the images. After the workflow module assigns the orders and corresponding images to the selected doctors, the image server 202 may transmit the compressed images over the network to the doctor system 106A.

In one embodiment configured to process DICOM-formatted images, a comparator module 216 receives extracted DICOM data 218 and database data 220 from the image server 202. The image server extracts the original DICOM data from the images 210 again and transmits it to the comparator module 216 for comparison with the database data 220. The comparison may be used to determine if the DICOM processor 212 stored the extracted data correctly and under the correct patient name. For example, if the medical facility ID 110 provided by the medical facility 104 is not unique within the database 214 the workflow module 116 may be unable to provide the correct ID to the data module 112 to filter the medical request. In addition, if a patient name included in the database data 220 and associated with the medical request does not match a patient name specified in the DICOM data 218, then the request may be incorrectly associated with the patient. If the request is incorrectly associated, then the comparator module 216 sends an unidentified order 222 to the order server 204 for correction. Otherwise, the comparator module 216 provides the medical facility ID 110 derived from the DICOM data included in the medical request to a caching module 224.

The caching module 224 caches information related to the medical request. The caching module 224 transmits the medical facility ID 110 to the workflow module 116. The workflow module transmits the medical facility ID 110 to the data module, which may use the facility ID 110 to access doctor information for doctors credentialed at a medical facility specified by the facility ID. The data module 112 then returns the doctor information to the workflow module 116. Additionally, the data module may return medical facility information 248, such as how many requests per day the facility is contracted to request. The workflow module then performs filtering algorithms to determine a doctor to receive the request and returns an associated doctor ID 226 to the caching module.

The caching module 224 sends the identified doctor ID 226 to the image server 202. The image server 202 may place the images included in the medical request in file folders, or directories, which are associated with the identified doctor ID 226. Alternately, the images may be transmitted directly to a remote location or server. The caching module 224 generates a pre-populated order 228 using the extracted DICOM data 218 and sends the pre-populated order 228 to the order server 204. In one specific embodiment, the pre-populated order serves as a formal order to read radiology images and is pre-populated with patient and hospital information, such as the hospital and patient name.

The order server 204 sends the pre-populated order 228 to the medical facility 104. The medical facility 104 validates the information contained in the pre-populated order 228 and sends the validated order 230 to the order server 204. For example, staff at the medical facility 104 may check the pre-populated information for correctness and specify or validate a number of images included in the request, a reason for the request, and a medical history of the patient. After receipt of the validated order, the order server 204 sends the validated order 230 to the caching module 224.

Unidentified orders 222 may also be corrected and then transmitted to the caching module 224. For example, personnel at the medical facility 104 may contact an operator with access to the order server. The medical facility personnel may provide the correct patient identification and other necessary information to correct the unidentified order 222. The operator may then correct the order 222, allowing the corrected order to be transmitted to the caching module 224 as an identified order 232.

In another implementation, unidentified orders 222 are corrected by transmitting a pre-populated order 228 to a “best guess” or “most likely” medical facility for confirmation. For example, the DICOM image header information associated with the unidentified order 222 may be used to generate a pre-populated order that includes the patient's name and other extracted information. If the originating facility is uncertain, the order server 204 may determine the medical facility with the highest probability of being the originating facility. The order server may then transmit the pre-populated form with the patient information for confirmation. If the order server determines that more than one medical facility matches information from the DICOM header, the order server may send a pre-populated form to all the matching medical facilities. The confirmed order is ultimately then transmitted to the caching module 224.

In one implementation, in addition to image metadata received within the medical imaging files, other metadata values may be provided by data communications between a medical facility and the IO Management System 102. For example, a facility identifier may be provided within metadata from a data transmission compliant with the DICOM communication protocol. This communication may be configured to contain metadata that embeds a facility ID or other usable data. In this way, identification of the sending facility may be achieved independent of any imaging metadata. As is apparent, numerous other data fields and values relevant to processing at the IO Management System may be provided within the data transmission metadata.

As images included in a medical request are received, the caching module 224 queries the image server 202 to determine if the correct number of images have been received, as indicated by arrow 234. If there are either too few or too many images received, then the caching module 224 refers the medical request to an operations unit 236 where the image count is corrected, as indicated by arrow 238. In one implementation, the image count is manually corrected by an operator that may contact personnel at the medical facility to inquire about the image count. When the image count is correct, the caching module 224 sends to the order server 204 an auto-arrived alert 240, and the order associated with the received medical images is placed in the doctor work list 246 associated with the doctor assigned to review the medical request.

The order server 204 sends the validated order 230, which is in the doctor's work list 246, to the order client 242 at the doctor system 106A. The image server 202 transmits the images to an image client 244 at the doctor system 106A. The doctor system 106A is associated with the identified doctor ID 226 and it is accessible by the identified doctor. The doctor may then review the images 208 and the order 230 associated with the request. Ultimately, the doctor generates a report based on the review and the report is sent to the medical facility 104, either directly or through the IO Management System 102.

As suggested above, the IO Management System 102 may be operably coupled to or otherwise directly contain the processing functionality of a RIS for use in a teleradiology setting. Specifically, in a teleradiology setting, the use and extraction of header data from images allows a request for a radiology read to follow a predefined workflow, in addition to having a radiology order be pre-populated and/or automatically created based on the images transmitted to the teleradiology provider.

In a teleradiology embodiment, a RIS interface may be provided to allow hospitals and medical facilities to enter and verify patient orders and all associated data electronically with the teleradiology provider. The teleradiology RIS may use information originating from the headers of the sent images and processed within the IO Management System to create and pre-populate data. Pre-populating data within the RIS interface may assist the technician in reducing the amount of data entry, while the RIS may also ensure that the data supporting the study is complete and consistent. For example, some of the RIS interface fields such as patient name and identifier may be automatically populated or updated from the DICOM header of the first image received by the teleradiology provider; although this information is only as accurate as the information in the DICOM header of the image.

Using the RIS interface in a teleradiology embodiment allows the hospital or medical facility to quickly validate and submit a radiology read order for a particular study. The hospital or medical facility may be able to access the pre-populated radiology read order within the RIS interface as soon as the first image is received and processed by the teleradiology provider—even if all of the images for the study have not yet been received or processed. Also, upon verification, data entry, and submittal of the radiology read order, the read order may be transmitted or become immediately visible to the radiologists credentialed for the specific facility or otherwise assigned to read the radiology study. This provides a significant improvement over other order request methods such as fax, which do not allow such wide and rapid distribution of order information. Further, processing these steps with the first image (or one of the first in the series of images) received greatly decreases the span of time to review and validate the order, and thus greatly decreases the amount of time before the radiologist can proceed with the study reads.

The teleradiology RIS may be configured to allow the medical facility staff to directly monitor the status of an order. For example, technicians and other users may confirm that an order has been submitted and that all appropriate studies have been requested. The RIS may also allow submitted orders to be modified or updated, prior to reading. A complete worklist may be viewed, showing all orders and their status, and whether orders are awaiting reading, currently undergoing reading, or have been read and results distributed.

The radiology read order may contain information about a patient, such as name, medical history, and the reason for creating the image. The order may also include a description of an associated image, such as a pelvic abdominal scan, a number of images associated with the order, and an order type, such as preliminary or final read. The presence of the patient name and other patient information may enable a particular image to be linked with a particular order in the RIS.

In one embodiment, the teleradiology RIS obtains the following fields from the information listed in the image metadata (e.g., the DICOM headers) of the radiology image data files: a) Patient Name; b) Medical Record Number (MRN); c) Accession Number (when applicable); and d) Exam Time. Other data fields and values from the image metadata may be processed. For example, relevant values may be provided from the groups of metadata defined according to the DICOM standard, including sender information, patient information, scan information, and study information. The technician will then verify that all of this processed information is correct within the pre-populated radiology read order. Errors in the information from a DICOM header may result from incorrect configurations on a modality.

The teleradiology RIS may also use other fields that may be extracted from the DICOM headers of the radiology images, such as the Referring Physician and Patient Sex. Again, this information must be validated in the order by a technician or doctor before the order's submission to a radiologist. The teleradiology RIS interface may allow other fields to be filled out and provided manually or in an order interface. These include a date of birth and/or age, an examination date, and the time-sensitivity of the order (for example, a notation if the images originate from an emergency room order or are otherwise time-sensitive).

In one embodiment, the technician or doctor may use a web page, remote desktop, virtual private network (VPN), or other type of remote access to review the order within an interface of the teleradiology RIS. As an example of the type of information that may need verification includes the a) examination time and date; b) the number of images; c) the type of study or image-generating modality; d) indications from the scan such as contrast or non-contrast; and e) other information related to the type or orientation of the scan.

In one embodiment, verification of the pre-populated radiology order may be processed through use of a hospital client system configured to receive and display a radiology order form from the IO Management System 102. After the hospital order client receives the pre-populated order template, a technician may access the order, verify the pre-populated information, and enter any additional information that is needed to complete the order. For instance, the technician may verify that the patient name correlates to the medical record number listed in the pre-populated order. The technician may also enter additional information in the order, if it is not already present, such as data or an age for the patient, exam date, and the type of study which needs to be examined by the radiologist. The technician may then submit the order to the IO Management System as described above.

The technician may then submit the order to a radiologist for reading the patient's images. The technician may validate the order into the computing device and submit the order to the IO Management System 102. Validated orders associated with the images may be transmitted from the hospital to the IO Management System and ultimately forwarded to the appropriate radiologists.

The orders sent from the hospital or medical facility may be processed with the IO Management System 102 through use of an order server 204. The order server assigns the orders to the appropriate radiologists, and transmits the orders over the network, such as the Internet, to the assigned radiologists' systems. Each radiologist system may contain a computing device with components necessary to display the images, view the read orders, and return a report based on examination of the images. For example, radiologist system A may include a computing device with a display and an image decompressor. The images transmitted by the IO Management System are received from the network, decompressed by the image decompressor, and displayed on the display. The image decompressor may be implemented on the computing device, or on a separate computing device, and use decompression algorithms, such as the decompression algorithms associated with JPEG, JPEGLS, and JPEG2000. The images may be cached at the radiologist system. For example, the images may be saved to a local storage device in the radiologist system. In one implementation, only the image or images which are associated with a particular order assigned to and accepted by the radiologist at radiologist system A may be shown on the display. In another implementation, the radiologist may view images of former orders accepted by the radiologist or orders that the radiologist plans to accept. In other implementations, the radiologist may view images regardless of whether the order is or will be accepted.

In a further embodiment, information that is derived from or otherwise processed in connection with the image metadata may be used in connection with a workflow used for assignment and review of the radiology images. For example, in a teleradiology practice, order creation and processing may also involve selecting a remote radiologist from a plurality of radiologists to assign the radiology read request and the associated study images. Further, the workflow may be customized to send the radiology read request to a certain radiologist based on facility information (such as which radiologist is licensed and credentialed with the hospital or medical facility that is requesting the read) and patient information (such as selection of a pediatric radiologist based on the age within the patient information) indicated within the image metadata.

FIG. 3 further illustrates a system 300 for assigning medical requests (such as radiology studies) to doctor systems used in connection with such an embodiment of the present invention. As a non-limiting example, system 300 may be used by a teleradiology provider to collect and assign radiological images for reading by a plurality of radiologists at remote locations. System 300 may be adapted for use in a localized or semi-localized radiology practice to direct the workflow of a plurality of radiological image studies to a defined set of radiologists.

As shown in FIG. 3, medical facilities transmit the medical requests to an IO Management System 102, which implements a workflow module 116 that assigns the medical requests to selected doctors. The assignment may be based on several variables, such as whether the doctor is credentialed at the hospital, the doctor's schedule, the preference of the hospital for certain doctors, doctors' licensing status, compensation metrics, online status, geography, performance, and the volume and/or complexity of previous medical requests that have been assigned to a doctor. After assignment, the IO Management System 102 transmits the requests to the assigned doctor. In a further embodiment, a speculative assignment of an eligible radiologist(s) might be first performed based on preliminary information derived from the image and data transmission metadata, followed by the actual assignment or selection of the radiologist derived from verified information transmitted for the validated order.

To implement the medical request assignment, the system 300 coordinates the workflow between the IO management system 102, a medical facility 104, and doctor systems 106A-C. The IO Management System 102 performs operations to route medical requests from medical facilities, such as the medical facility 104, to one or more of the doctor systems 106A-C. The IO Management System 102 receives a medical request 108 (specifically, in this embodiment, a radiology study request), which includes a medical facility identifier (ID) 110, from the medical facility 104. The medical facility ID 110 is associated with the medical facility 104 from which the radiology study request 108 originated.

A data module 112 within the IO Management System 102 stores doctor information 114 including a doctor identifier, doctor schedule information, an order volume, a doctor classification composite metric, doctor location information, preference information, performance information, and contract terms (as suggested in FIG. 2). For example, a doctor may be identified within the data module 112 by a doctor ID. A doctor's schedule information may include times and dates that a doctor is scheduled to be available for reviewing medical requests. A doctor's order volume may indicate the number of medical requests that a doctor is capable of completing in a given period of time. A doctor's location may determine whether the doctor is allowed to review certain medical requests (e.g., doctors outside the United States may not be allowed to perform a final review of medical images). A medical facility's request for or refusal of a particular doctor may be indicated in the doctor preference information. A doctor's performance may be indicated by the accuracy of the doctor's reports or the satisfaction of medical facilities for which the doctor has reviewed medical requests. The contract terms of a doctor may specify a quota of medical requests the doctor is paid for regardless of the number of medical requests the doctor actually reviews. The contract terms may also specify a bonus rate for medical requests above the quota that are reviewed by the doctor.

A workflow module 116 receives the doctor information 114 and uses it along with the medical facility ID 110 to filter the radiology study request 108. In filtering the radiology study request 108, the workflow module 116 identifies one or more doctors to receive the request 108. The IO Management System 102 transmits the radiology study request 108 to each doctor system 106A, which is accessible by the doctor(s) identified during the filtering of the medical request. Consistent with the implementations described herein, the radiology study request 108 may include or reference an image, an order, or both.

To filter the radiology study request 108, the workflow module 116 transmits the medical facility ID 110 to the data module 112. The data module 112 uses the medical facility ID 110 to access and transmit the doctor information 114 associated with the medical facility ID. For example, the data module 112 may use the medical facility ID 110 as a key in a database table to locate all the doctors credentialed at a hospital specified by the medical facility ID 110. In this implementation, the data module 112 performs a first pass filter by providing to the workflow module 116 the doctor information 114, which contains a list of doctors credentialed at the medical facility 104.

In another implementation, the returned list of doctors may be a subset of all the doctors credentialed at the medical facility 104. For example, the data module 112 may only return a list of credentialed doctors that are scheduled to work (as indicated by the doctor scheduling information stored in the data module 112) when the medical facility ID 110 is received by the data module 112. In addition to selecting the appropriate doctor on the basis of the doctor's schedule, specialization, credentialing, and licensing, other external factors such as medical facility preferences and teleradiology provider preferences may be factored into this workflow and the ultimate assignment of the radiology study request to one or more doctors.

For example, the workflow may need to determine and consider licensing information related to whether a doctor is licensed in a particular state to practice medicine, and credentialing information related to whether a doctor is credentialed, or has privileges or is otherwise authorized, to perform medical services for a particular hospital. The query formulated by the data module may include the information directly or indirectly extracted from the image. Further, the workflow may factor based on the hospital information which doctors are licensed in the hospital's state and which doctors are credentialed at that hospital, which may have precedence over a specialization. Thus, if the information extracted from the image metadata indicates the type of procedure to which the image relates, such as a head scan, the workflow may also factor which doctors specialize in this type of image reading (while factoring that this scan cannot be given to a doctor who is not licensed or credentialed for this facility).

Based on a combination of the extracted and computed data, which may include the patient information, the image associated with the patient, the hospital information, and the individual doctors that are eligible to examine the images associated with the patient, the radiology study may be assigned to a particular radiologist. In one embodiment, the image server of the IO Management System transmits or places the images in folders, each folder being associated with an individual radiologist that is eligible to examine the images. The folders may be logical folders, such as directories on a server. The image server may also put additional information associated with the images in the eligible doctors' folders, such as any of the information contained in the study record or in the radiology read order. The image server may then transmit the images to the eligible doctor's radiologists systems. For example, if Dr. A is an eligible doctor, the images and the study record may be placed in Dr. A's folder, and then transmitted by the IO Management System to the Radiologist system A through a network, such as the Internet. The doctor using the Radiologist system A may then use an image client to view the images and/or the radiology read order.

FIG. 4 provides a flowchart of a summarized method for pre-populating radiology read orders using information extracted from radiology images related to the read orders according to one embodiment of the present invention. Step 410 illustrates that the IO Management System receives an image. Consistent with the processing methods described above, a hospital or other medical facility may send one or more images to the IO Management System using the Internet or other network. Next, in Step 420, the medical facility and patient information is extracted from the image metadata through use of the IO Management System. For example, a DICOM image may contain a header with metadata that includes the patient's name and other related information, the transmitting facility's information including an identifier, and the image type.

In Step 430, an order template is generated and populated with information extracted from the image. For example, a radiology read order may be created and pre-populated with the patient's name and information from the facility that transmitted the images. This information in the image metadata will have originated from input by the radiologist technician or another medical professional input into the image modality or an image processing system within the medical facility. The pre-populated order may then be transmitted back to the medical facility that generated the image as in step 440.

Facility personnel may then receive and/or access the pre-populated order as in step 450 to verify the pre-populated information. This may be performed through use of an interface directly to the IO Management System, a teleradiology RIS, or the like. In this interface the facility may also enter additional information (such as critical medical details or physician instructions) related to the radiology study examination. Finally, the medical facility will submit the validated order and transmit it back to the IO Management System or teleradiology RIS, and a radiologist will conduct a read of the images based on the order as in step 460.

In other embodiments, the IO Management System or teleradiology RIS may receive the extracted information correctly from an image server or access a study record that contains the extracted image information. Additionally, the process steps depicted in FIG. 4 may operate concurrently or in slightly different order. For example, the information may be extracted from the image while the order module is generating the order template and the fields may be pre-populated as the extracted information becomes available.

A number of embodiments of the invention have been described. Nevertheless, it will be understood that various modifications may be made without departing from the spirit and scope of the invention. The images may contain data stored within Digital Information in Communications and Medicine (DICOM) formatted files, or data stored consistent with other industry-standard and proprietary formats. Likewise, the information and format of the metadata within the images may vary significantly, such as including the number of images in the transmission, the name of the patient, a name of the medical facility, and a name of a device within the medical facility where the image was created. Other information relevant to the patient's medical care such as insurance information may also be provided within the image metadata. In some implementations, the medical facility ID comprises the name of the medical facility and the name of the device.

In other embodiments, the medical request may comprise information or images in a format other than DICOM format. For example, the medical request may comprise images in CTI ECAT 7 image format, which originated from CTI Molecular Imaging, Inc. of Knoxville, Tenn. A processor may extract the ECAT 7 data from image headers and store the information in the database or other data store. The processor may recognize the ECAT 7 file type by parsing the header and determining if a text string “MATRIX71” is at location 0 of the file. After the file is identified, information about the patient, such as name, age, and gender, may be extracted from the file along with additional information, such as the facility identifier.

Additionally, the configurations and scenarios associated with a radiology workflow or need for radiology image processing may vary. Medical facilities may send images and orders at the same time as one another or at different times. For example, in some implementations, the medical facility sends the order before the images. In these implementations, the pre-populated order is not transmitted by the order server to the medical facility, but the order is completed in full by personnel at the medical facility.

Images, orders, and reports may be sent over the same network or different networks. For example, the IO Management System may receive images and orders through a single T1 or T3 connection to the Internet, or the images may be received from the Internet through a T1 or T3 connection and the orders may be received through a modem connection. In another example, the IO Management System may receive an image and an order from a medical facility over the Internet and return a corresponding report to the medical facility over a fax connection.

Additionally, the images and orders may be sent separately or combined in one transmission. For instance, a computing device at a medical facility may use software that sends the orders and the images with a single application and single set of actions, or the medical facility may send the images using one application that sends one transmission and send the orders using a different application that sends a separate transmission.

The network over which the images and orders are sent from the hospital or medical facility to the IO Management System may include a secure tunnel, such as a virtual private network (VPN). The VPN may include a secure computing device, or terminal, at the hospital, encrypted transmissions sent through the network, a secure computing device at the JO Management System, and a secure computing device at the radiologist systems. The transmission of encrypted images and orders may also include the use of other forms of secure communications, such as Secure Socket Layer (SSL), Terminal Services, and Citrix systems. Images and orders may be sent from multiple hospitals at the same time or at different times. For instance Hospital A, Hospital B, and Hospital N may submit images and orders simultaneously or serially over the Internet.

The IO Management System may be implemented on a single computing device or on multiple computing devices, such as a server farm or in a cloud-computing setting. In one implementation, the IO Management System may be disbursed over several servers that are connected through a network. This configuration may be advantageous by facilitating expansion of the system and flexibility in managing the flow of received and output images and orders.

The order module and the image module may be implemented on the same computing device or separate computing devices. For example, if the order module and image module are implemented on separate servers in the server farm, they may communicate with each other through a private network or a secure channel via the Internet. This architecture may permit the image module and order module to be placed at different physical locations, which may facilitate maintenance, upgrades, and repair.

The radiology read order that is received by the computing device at the radiologist system may or may not be accepted by the radiologist. If the order is accepted, the radiologist may view the images associated with the order, make a report based on the images, and transmit the report back to the IO Management System through the network. For example, the radiologist may dictate the report using speech recognition software installed on the computing device, and the computing device may send the generated report back to the IO Management System. The radiologist may also enter the report through a keyboard or other input device.

Additionally, the radiologist system may contain more than one computing device. For instance, there may be one computing device that accepts the images, decompresses them, and displays the images for the radiologist. The other computing device may handle receiving the orders, displaying them to the radiologist for acceptance, receiving the report from the radiologist, and transmitting the report to the IO Management System. The radiologist may also not accept the order. For instance, if the radiologist accessing the system is currently viewing an order previously received, the radiologist may not be able to accept another order until the previous order is completed. In this situation, a different radiologist may accept the order at another system. This is possible because the IO Management System may send the order to more than one radiologist system. Once a radiologist at one radiologist system accepts an order, the IO Management System may remove the order from the other radiologist systems.

The radiologist's report may be received at the IO Management System, where it may be formatted by the order module and sent to a fax system. The report may then be transmitted to a fax in the hospital that originated the order associated with the report. The fax system may contain several faxes to handle multiple reports simultaneously. Alternatively, the report may be sent to the hospital using the Internet. For example, the report may be sent in an e-mail to an SMTP (Simple Mail Transfer Protocol) server, where it is transmitted to the hospital via the Internet. Additionally, the report may be sent to a printer. After the report is printed out, it may be mailed or otherwise transmitted to the hospital. Alternatively, the report can be viewed via a web-based application via a standard internet browser or mobile device.

In further embodiments, a Hospital RIS can request and/or submit an order from the IO Management System using HL7 standard communications. For example, an order that is entered and submitted with a hospital information system may communicate with the teleradiology RIS using HL7 communications to obtain a pre-filled radiology read request. Given the high reliability of such data, this read request may then be automatically validated without manual review by a human technician. As soon as metadata from the images is processed by the IO Management System, the IO Management System may correlate these images to the previously validated order and forward the read order to the radiologist. In this way, the order may be automatically pre-populated, validated, and submitted by the medical facility provided that the images and HL7-initiated order data correlate to each other.

In further embodiments, facility preferences and settings may be factored in connection with the extraction of the metadata from the medical images. As discussed above, the selection of the radiologist from a pool of available radiologists may be derived from these facility preferences and settings. Additionally, other preferences such as the format of the eventual report and other processing changes may occur within the IO Management System or the radiologist's report as a result of the facility preferences and settings.

Information derived from the image metadata and extracted by the IO Management System may also be used in connection with billing, electronic medical records, and other health data uses that are not directly related to the workflow of the radiology image. Likewise, further embodiments of the present invention may correlate the data extracted from the image metadata to information from billing, electronic medical record, and other health data systems.

The features of the present invention described herein may be implemented in digital electronic circuitry, or in computer hardware, firmware, software, or in combinations thereof. For example, a computer program product designed to perform functions of the described implementations may be embodied in one or more computer readable medium(s) having computer readable program code embodied thereon; an apparatus such as a computing system with a processor and memory may embody components structured to perform functions of the described implementations; and method steps may be performed by a programmable processor executing a program of instructions to perform functions of the described implementations by operating on input data and generating output. The described features can be implemented advantageously in one or more computer programs that are executable on a programmable system including at least one programmable processor coupled to receive data and instructions from, and to transmit data and instructions to, a data storage system, at least one input device, and at least one output device. A program is generally a set of instructions that can be used, directly or indirectly, in a computer or other electronic programmable device to perform a certain activity or bring about a certain result. A computer program can be written in any form of programming language, including compiled or interpreted languages, and it can be deployed in any form, including as a stand-alone program or as a DLL, module, component, subroutine, or other unit suitable for use in a computing environment.

Suitable processors for the execution of a program of instructions include, by way of example, both general and special purpose microprocessors, and the sole processor or one of multiple processors of any kind of computer. Generally, a processor will receive instructions and data from a read-only memory or a random access memory or both. The essential elements of a computer are a processor for executing instructions and one or more memories for storing instructions and data. Generally, a computer will also include, or be operatively coupled to communicate with, one or more mass storage devices for storing data files; such devices include solid state drives; magnetic disks, such as internal hard disks and removable disks; magneto-optical disks; and optical disks. Storage devices suitable for tangibly embodying computer program instructions and data include all forms of non-volatile memory, including by way of example semiconductor memory devices, such as EPROM, EEPROM, and flash memory devices; magnetic disks such as internal hard disks and removable disks; magneto-optical disks; and CD-ROM and DVD-ROM disks. The processor and the memory can be supplemented by, or incorporated in, ASICs (application-specific integrated circuits).

The features can be implemented in a computer system that includes a back-end component, such as a data server, or that includes a middleware component, such as an application server or an Internet server, or that includes a front-end component, such as a client computer having a graphical user interface or an Internet browser, or any combination of them. The components of the system can be connected by any form or medium of digital data communication such as a communication network. Examples of communication networks include, e.g., a LAN, a WAN, and the computers and networks forming the Internet.

The computer system can include clients and servers. A client and server are generally remote from each other and typically interact through a network, such as the described one. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other.

Although various representative embodiments of this invention have been described above with a certain degree of particularity, those skilled in the art could make numerous alterations to the disclosed embodiments without departing from the spirit or scope of the inventive subject matter set forth in the specification and claims. 

What is claimed is:
 1. A method for processing radiology orders and images using medical image data, comprising: receiving, at an image order processing server, a series of radiology image data files for a patient electronically, the series of radiology image data files being transmitted from a medical facility with a data transmission via a network, and each of the series of radiology image data files being generated by an imaging modality at the medical facility and containing metadata and radiology image data; processing at least one of the series of radiology image data files, at the image order processing server, to extract the metadata stored therein; creating and populating a radiology order, at the image order processing server, based on data provided by one or more data fields within the extracted metadata; electronically transmitting the radiology order to the medical facility for verification of the radiology order; receiving the validated radiology order, at the image order processing server, from the medical facility; selecting a radiologist with the image order processing server based on the validated radiology order; and electronically transmitting the radiology order and the series of radiology image data files from the image order processing server to the selected radiologist. 